Microsoft announced the Surface tablet last evening and for those who missed that news, or for those who simply want to watch it happen — the keynote video has been posted. The announcement comes in at just over 47 minutes in length, and well, it will allow you to see all the details as they happened. And nicely done, there are a few options available for watching. You have the YouTube embed here in the post as well as a direct download link from the folks at Microsoft (for that just follow the link below).